根据Top命令的PID找出docker的容器

• 背景

docker部署的java服务cpu占用过高，在宿主主机top命令找出pid，直接用jstack等命令dump日志出错，需要到宿主内执行，需要进行pid找出对应的docker容器

• 先根据top获取pid

[root@localhost ~]# top
top - 10:35:54 up 29 days, 19:23,  4 users,  load average: 1.60, 1.48, 1.64
Tasks: 177 total,   1 running, 176 sleeping,   0 stopped,   0 zombie
%Cpu(s): 11.7 us, 25.1 sy,  0.0 ni, 63.2 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem : 16268356 total,  1916624 free,  9411724 used,  4940008 buff/cache
KiB Swap:  8257532 total,  8196196 free,    61336 used.  6353816 avail Mem

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
14191 root      20   0 8124108 1.459g  14116 S  12.5  9.4 175:41.58 java

• 根据docker inspect -f 参数及 grep 筛选

docker inspect -f '{{.Name}} {{.State.Pid}} {{.State.Running}}' `docker ps -q` |grep 14191

• 参考

docker 查看系统进程pid